Space shuttle Discovery's STS-133 Commander Steve Lindsey, left, and Mission Specialist Nicole Stott prepare to depart NASA's Kennedy Space Center in Florida in a T-38 training jet. The launch to the International Space Station was delayed because a leak was detected at the Ground Umbilical Carrier Plate while Discovery's external fuel tank was being loaded for launch. Image credit: NASA/Kim Shiflett Nov. 5, 2010